<template>
  <div class="user-info-head" @click="editCropper()">
    <!-- <img :src="options.img" title="点击上传头像" class="img-circle img-lg" /> -->
    <el-avatar shape="circle" :size="120" :src="options.img" />
  </div>
  <el-dialog :title="title" v-model="open" width="800px" append-to-body @opened="modalOpened" @close="closeDialog">
    <el-row>
      <el-col :xs="24" :md="12" :style="{ height: '350px' }">
        <vue-cropper
          ref="cropper"
          :img="options.img"
          :info="true"
          :autoCrop="options.autoCrop"
          :autoCropWidth="options.autoCropWidth"
          :autoCropHeight="options.autoCropHeight"
          :fixedBox="options.fixedBox"
          @realTime="realTime"
          v-if="visible" />
      </el-col>
      <el-col :xs="24" :md="12" :style="{ height: '350px' }">
        <div class="avatar-upload-preview">
          <img :src="options.previews.url" :style="options.previews.img" />
        </div>
      </el-col>
    </el-row>
    <br />
    <el-row>
      <el-col :lg="2" :md="2">
        <el-upload action="#" :http-request="requestUpload" :show-file-list="false" :before-upload="beforeUpload">
          <el-button>
            选择
            <el-icon class="el-icon--right">
              <Upload />
            </el-icon>
          </el-button>
        </el-upload>
      </el-col>
      <el-col :lg="{ span: 1, offset: 2 }" :md="2">
        <el-button icon="Plus" @click="changeScale(1)"></el-button>
      </el-col>
      <el-col :lg="{ span: 1, offset: 1 }" :md="2">
        <el-button icon="Minus" @click="changeScale(-1)"></el-button>
      </el-col>
      <el-col :lg="{ span: 1, offset: 1 }" :md="2">
        <el-button icon="RefreshLeft" @click="rotateLeft()"></el-button>
      </el-col>
      <el-col :lg="{ span: 1, offset: 1 }" :md="2">
        <el-button icon="RefreshRight" @click="rotateRight()"></el-button>
      </el-col>
      <el-col :lg="{ span: 2, offset: 6 }" :md="2">
        <el-button type="primary" @click="uploadImg()">提 交</el-button>
      </el-col>
    </el-row>
  </el-dialog>
</template>

<script>
import 'vue-cropper/dist/index.css'
import { VueCropper } from 'vue-cropper'
import { uploadAvatar } from '@/api/system/user'
import useUserStore from '@/store/modules/user'

export default {
  components: {
    VueCropper,
    uploadAvatar
  },
  setup() {
    const useStore = useUserStore()
    const { proxy } = getCurrentInstance()

    const open = ref(false)
    const visible = ref(false)
    const title = ref('修改头像')
    const fileName = ref('')
    //图片裁剪数据
    const options = reactive({
      img: useStore.avatar, // 裁剪图片的地址
      autoCrop: true, // 是否默认生成截图框
      autoCropWidth: 200, // 默认生成截图框宽度
      autoCropHeight: 200, // 默认生成截图框高度
      fixedBox: true, // 固定截图框大小 不允许改变
      previews: {} //预览数据
    })

    /** 编辑头像 */
    function editCropper() {
      open.value = true
    }
    /** 打开弹出层结束时的回调 */
    function modalOpened() {
      visible.value = true
    }
    /** 覆盖默认上传行为 */
    function requestUpload() {}
    /** 向左旋转 */
    function rotateLeft() {
      proxy.$refs.cropper.rotateLeft()
    }
    /** 向右旋转 */
    function rotateRight() {
      proxy.$refs.cropper.rotateRight()
    }
    /** 图片缩放 */
    function changeScale(num) {
      num = num || 1
      proxy.$refs.cropper.changeScale(num)
    }
    /** 上传预处理 */
    function beforeUpload(file) {
      if (file.type.indexOf('image/') == -1) {
        proxy.$modal.msgError('文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。')
      } else {
        fileName.value = file.name
        const reader = new FileReader()
        reader.readAsDataURL(file)
        reader.onload = () => {
          options.img = reader.result
        }
      }
    }
    /** 上传图片 */
    function uploadImg() {
      proxy.$refs.cropper.getCropBlob((data) => {
        let formData = new FormData()
        var fileOfBlob = new File([data], fileName.value)
        formData.append('picture', fileOfBlob)
        uploadAvatar(formData).then((response) => {
          open.value = false
          options.img = response.data.imgUrl
          useStore.avatar = options.img
          proxy.$modal.msgSuccess('修改成功')
          visible.value = false
        })
      })
    }
    /** 实时预览 */
    function realTime(data) {
      options.previews = data
    }
    /** 关闭窗口 */
    function closeDialog() {
      options.img = useStore.avatar
      options.visible = false
    }

    return {
      open,
      visible,
      title,
      options,
      requestUpload,
      modalOpened,
      rotateRight,
      rotateLeft,
      editCropper,
      changeScale,
      beforeUpload,
      uploadImg,
      realTime,
      closeDialog
    }
  }
}
</script>

<style lang="scss" scoped>
.user-info-head {
  position: relative;
  display: inline-block;
  width: 120px;
  height: 120px;

  img {
    width: 100%;
  }
}

.user-info-head:hover:after {
  content: '+';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  color: #eee;
  background: rgba(0, 0, 0, 0.5);
  font-size: 24px;
  font-style: normal;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  cursor: pointer;
  line-height: 120px;
  border-radius: 50%;
}
</style>
